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Old 12-05-2015, 08:03 AM   #1
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Concrete Ships

Who knew?

Ships Made of Concrete | Amusing Planet
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Old 12-05-2015, 08:14 AM   #2
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Can't open some links right now...so not positive what it is...


The ruins of a concrete ship is just south of the entrance to the west end of the Cape May canal.....beached.


I also think some were used as a breakwater for the ferry landing on the Delmarva side of the old ferry route across the mouth of the Chesapeake.
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Old 12-05-2015, 08:30 AM   #3
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The SS Sapona, sank during a storm in 1926, Bimini. It's a favorite snorkel spot.

https://en.wikipedia.org/wiki/SS_Sapona
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Old 12-05-2015, 08:31 AM   #4
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Greetings,
Not new technology. Not quite a ship BUT they were floated to location https://en.wikipedia.org/wiki/Mulberry_harbour
How about ice? PYKRETE,GEOFFREY PYKE
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Old 12-05-2015, 09:09 AM   #5
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...How about ice? PYKRETE,GEOFFREY PYKE
Now that's thinking outside the box.
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Old 12-05-2015, 10:03 AM   #6
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Ferro-cement the was a favorite building material for amateur boat builders for many years. They thought it would be an easy cheap material to work with. It just made crappy boats that soon bled rust through the concrete. Back in the 1970s there was a company that made ferro-cement houseboats on the Miami River. They went bankrupt pretty quick.
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Old 12-05-2015, 12:26 PM   #7
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When I was a little kid in Sausalito we used to go south to (I think) Santa Cruz. There was a beached concrete freighter hulk there that had been turned into a sort of amusement pier if memory serves. My mother or somebody told me it had been built by Kaiser as a prototype freighter but I can't remember for what purpose. I was just a few years old so the thing seemed huge to me but I'm guessing it wasn't actually all that large. I have no idea if it's still there.

PS-- So I just looked it up and apparently it is still there.
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Old 12-05-2015, 12:44 PM   #8
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Concrete tanker,aprox. 150 ft, and several concrete bridge pontoons form part of the breakwater at Tyee marina here in Tacoma
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Old 12-05-2015, 12:53 PM   #9
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Concrete reinforced with steel is pretty amazing stuff. Probably not an optimal material for shipbuilding, but can be done. Especially if steel is scarce for some reason.
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Old 12-05-2015, 12:57 PM   #10
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I enjoyed many a beer after work while standing on that boat Marin. It's not a bad place to watch the sun go down. 150 or so steps back up to street level will keep your legs in shape.
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Old 12-05-2015, 02:15 PM   #11
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There was a concrete fish boat in Craig Alaska.

Didn't take a picture .. kinda rough looking .. may have hurt the camra.
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Old 12-05-2015, 07:19 PM   #12
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Quote:
Originally Posted by Marin View Post
When I was a little kid in Sausalito we used to go south to (I think) Santa Cruz. There was a beached concrete freighter hulk there that had been turned into a sort of amusement pier if memory serves. My mother or somebody told me it had been built by Kaiser as a prototype freighter but I can't remember for what purpose. I was just a few years old so the thing seemed huge to me but I'm guessing it wasn't actually all that large. I have no idea if it's still there.

PS-- So I just looked it up and apparently it is still there.
Me too, but I'm not from Sausalito. Believe it's off Aptos if not Santa Cruz. The boat's remains were still there three years ago (Dad retired in Aptos and we occasionally revisited the site as part of reliving our younger years), but it has deteriorated (dissolving), and boarding the old ship has been prohibited. The pier is still there, so one can closely observe the remains.

https://en.wikipedia.org/wiki/SS_Palo_Alto
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Old 12-05-2015, 08:04 PM   #13
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The ones that were used as breakwaters are WWII liberty ships. There is a good article on them in Wikipedia. 2,700 of them were built during WWII as war supplies transport ships. The average build time was 42 days. Many became breakwaters and artificial reefs after the war.

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Old 12-05-2015, 08:10 PM   #14
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All the floats for the floating bridges across Lake Washington in Seattle are made of concrete. I believe the bridge on Hood Canal is the same. Most of them are still floating. There have been a couple accidents, all human error, where some sections sank.
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Old 12-05-2015, 08:14 PM   #15
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If I recall correctly...having read it and my grandfather telling me stories about them.... one of the major issues with the concrete ships was the concrete was worse than steel for causing injuries when hit by bullets/shells.
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Old 12-05-2015, 11:27 PM   #16
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Well, I knew. 😀


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Old 12-05-2015, 11:34 PM   #17
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Believe it's off Aptos
You believe correctly sir.
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Old 12-06-2015, 12:05 AM   #18
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The ones that were used as breakwaters are WWII liberty ships. There is a good article on them in Wikipedia. 2,700 of them were built during WWII as war supplies transport ships. The average build time was 42 days. Many became breakwaters and artificial reefs after the war.
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Nope. They appear similar to Liberty Ships, but they are not. They are concrete ships and barges made by Barret and Hilp in San Francisco, CA, McCloskey Shipbuilding in Tampa, FL, Concrete Ship Constructors, National City, CA.

Older ships were of the Emergency Fleet Program and were built by various yards.

I'm kind of an expert in them actually. I have surveyed them and I have all of the drawings, and records from the US archives.
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Old 12-06-2015, 06:27 AM   #19
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Maybe I should have said many, a lot on the East Coast are. Have dove on several liberty ship artificial reefs and there is a good example of a breakwater built from them at the entrance to the harbor of Cape Charles, Virginia.

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Old 12-06-2015, 07:54 AM   #20
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Greetings,
Re: Post #14. The docks at Brunswick Landing, GA are concrete floaters.
Brunswick Landing Marina: A full service Georgia marina
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